Gearing.



C. E. COLLINS.

GBARING.

APPLICATION FILED PEB.29. 1912.

' Patented N0v.19,l912;

a m H W.

C. E. COLLINS.

GEARING. I

APPLICATION FILED rmms, 1912.

1,044,991., :Patentd N0v.19,1912.

- 3 SHEETSSHBET 2.

Figure 2. I

WITNESSES: v

IIJVENTOR U. E. COLLINS.

GEARING.

APPLICATION FILED FBB.29, 1912. 7

1,044,991, Patented NOV. '19, 1912.

3 BEBETE-BHEET 3.

V 19 k M K (Q H 7 (D ""1' "f- "r- D 1 ii i Q Q Iiya re 3.

INVE/VTUR q area rm.

CHARLESJEflOLLINS, OF NEW YORK, N.,Y.

GEABING.

pecification or Letters Patent.

Patented No 1a, rat 2 Application filed February-29,1912. Serial No. 680,705.

pract ce, and my object is to provide a casing of this character primarily forthe purpose of securing greater facility in inspecting and making repairs in that type of automobile transmission mechanism in which are used both the slidable gear speed changing devices and the worm driven mechanism than has heretofore been possible.

A further object of the invention is to provide a gear casing which will suitably house all of the foregoing transmission devices in a neat, compact and symmetrical unitary structure. I

The foregoing andother objects of the invention are attained by the mechanism hereinafter fully described and claimed and illustrated the accompanying drawings in which-- Figure 1 isa front elevation of the mechanism looking toward the right in Fig. 2; Fig. 2' is a vertical longitudinal section of the casing and inclosed parts; and Fig. 3 is a similar view of the gearing, this figure to be understood as being a continuation of Fig. 2, but made as a separate figure for convenience of illustration only.

Referring particularly to the drawings I have shown at10 and 10- the portions of a casing adapted to be connected in a central vertical longitudinal plane through the axis of the motor shaft (not shown). Said casing sections are adapted to be detachably yet rigidly connected by-means of any suitable number of bolts 11 passing through lugs 10 of said casing sections. While I have indicated the slidable gear transmission portion of the device as being separable on the line 0-1) from the worm drivin mechanism portion, I wish to be understoo that the sections 10 and 10 may extend so as to include both portions of the driving mechanism so as to construct the casing of a unitary nature.

Within the casing above described is shown a main gear shaft 12 having a polygonal portion 12' on which is slidably mounted a gear 13 having aclutch member 13' adapted to engage directly with the corresponding clutch of a gear 14 into whose hub the shaft 12 extends at one end and said gear hub being adapted to receive the power shaft at its other end in a polygonal socket 14, whereby the gear 1 1 will be continudirect driving connection with the inclosed worm wheel 20 carrying the difierential mechanism 21 connected to the driven shaft or axle 22. It will appear, therefore,'-that my construction provides a substantially two-part casing longitudinally and centrally divided, each part of thecasing inclosing a portion of each of the related sets of gearing or transmitting devices, namely, the change speed mechanism and the wormdriven differential mechanism. The shaft 12 is therefore common to both sets of gear mechanism, and being a rigid member, the

stability and rigidity of the casing structure are thereby greatly augmented. I am aware, in my extensive automobile experience, of the importance of this compact and easily accessible construction in this type of transmission mechanism, and while I am further aware that gear casings of other types have been constructed divided either longitudinally or transversely, I believe I am the first to construct a casing of this tage herein set forth Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

In combination, the hereindescribed gearing comprising a pair ofsymmetrical casing character embodying the features of advansections detachably connected together in a nism and differential mechanism including longitudinal central vertical plane, said secat single rigid main shaftcommon to both of 10 tions comprising in a single symmetrical them, substantially as set forth.

compact unitary construction associated Dated, New York, February 28, 1912.

portions, a change speed mechanism in one CHARLES E. COLLINS. of said portions, and an associated worm Witnesses: v driving diflerential mechanism in the other EUGENE V. DALY,

casing. portion, said change speed mecha- FREDK. A. Ross.

Copies of thisvpatent may be obtained for flve cents each, by addressing the commissioner of Patents, Washington, I). 0. 

